In the early 90’s I was supporting an Air Defense exercise at a small National Guard base just south of Astoria, OR. At the end of the exercise 2 B1’s overflew our command post breaking sound barrier.
A few miles south of us was the town of Seaside, when they heard the sonic booms they initiated their tsunami drill and evacuated the city.
Good time was had by all.
Mine went off which is why I googled the story and post.